Allen & Heath XONE:K2 Node.js api

This module wraps the MIDI interface to communicate with the XONE:K2 in a sane api for Node.

Install

npm install xonek2

Setup

Plug in the controller ( ͡° ͜ʖ ͡°)

var xonek2 = require('xonek2');
var controller = xonek2.create();

if (!controller.connect())
  throw new Error("Can't connect to device");

Layout

The controller has 4 channels

// Access the third channel
var channel = controller.channels[2];

Each channel has an endless knob at the top, 3 standard knobs, a fader and 4 buttons

channel.endless_knob
channel.knobs[1] // The second knob
channel.fader
channel.buttons[3] // The last button

Standard knobs have a button beneath them, endless knobs are buttons themselves (on push).

channel.knobs[0].button
channel.endless_knob.button

Buttons and knobs have leds attached

channel.endless_knob.led
channel.knobs[2].button.led
channel.buttons[0].led

The two big buttons and the central endless knobs at the bottom can be accessed through controller.utils

controller.utils.buttons[1] // The "EXIT SETUP" button
controller.utils.endless_knobs[0]

Usage

All the components (except for leds) emit events.
The original midi message is sent along, in case you want to route it to a virtual midi device or something.

Buttons

var button = controller.channels[0].buttons[1]; // The "E" button

button.on('press', function() {
  console.log('Button pressed');
});

button.on('release', function() {
  console.log('Button released');
});

Knobs

var knob = controller.channels[3].knobs[1]; // The second knob on the last channel

knob.on('update', function(value, midi_msg) {
  console.log('Knob twisted: the value is (0-1): ' + value);
});

Faders

var fader = controller.channels[1].fader; // The fader on the second channel

fader.on('update', function(value, midi_msg) {
  console.log('Fader moved: the value is (0-1): ' + value);
});

Endless knobs

var endless_knob = controller.channels[0].endless_knob; // The endless knob on the first channel

endless_knob.on('update', function(value) {
  if (value == 1)
    console.log('Turnin right');

  if (value == -1)
    console.log('Turnin left');
});

Leds

Leds can be lit up in three different colors: red (default), orange and green.

var led = controller.channels[2].knobs[0].button.led;
led.turn_on()

var led2 = controller.channels[0].endless_knob.led;
led2.turn_on(xonek2.COLOR_ORANGE);

var led3 = controller.channels[1].buttons[2].led;
led3.turn_on(xonek2.COLOR_GREEN);

Turn off a led

led.turn_off();

Turn off all leds

controller.reset_leds();

Testing

Testing is done with a virtual midi device (so you don't need to connect the controller).

npm test

License

Copyright (c) 2015, Marco Sampellegrini [email protected]

Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.